Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.
Triodanis perfoliata (L.) Nieuwl.
Clasping Venus's Looking-glass
Campanulaceae (Bellflower Family)
Synonym(s): Legousia perfoliata, Specularia perfoliata, Triodanis perfoliata var. perfoliata
USDA Symbol: trpe4
USDA Native Status: L48 (N), CAN (N)
Wheel-shaped, bluish to purple flowers set singly in the axils of leaves that clasp the stem.
This plant also occurs in Mexico. The flowers in the lower leaf axils do not open but nonetheless produce seeds. The genus name, from the Greek treis (three) and odous (tooth), alludes to the three lobes of the calyx in many of the non-opening flowers. This distinctive annual can appear in any open spot, even in cultivated flower gardens. It is sometimes placed in the genus Specularia.
From the Image Gallery
Plant CharacteristicsDuration: Annual
Fruit Type: Capsule
Size Notes: Up to about 3 feet tall.
Bloom InformationBloom Color: Blue , Purple , Violet
Bloom Time: Apr , May , Jun , Jul
Bloom Notes: Purple to bluish lavender.
DistributionUSA: AL , AR , AZ , CA , CO , CT , DC , DE , FL , GA , HI , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , UT , VA , VT , WA , WI , WV , WY
Native Distribution: Ontario east to New Brunswick, south to Florida, west to Texas, and north to North Dakota; also in much of West.
Native Habitat: Ditches, Ravines, Depressions, Hillsides, Slopes, Woodlands' edge, Opening, Prairie, Plains, Meadows, Pastures, Savannas
Growing ConditionsWater Use: Low
Light Requirement: Shade
Soil Moisture: Dry
Soil pH: Circumneutral (pH 6.8-7.2)
Soil Description: Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay, Limestone-based
BenefitUse Ornamental: Attractive, Blooms ornamental
Use Medicinal: Cherokee Indians steeped roots and other parts of plant to make infusion for indigestion.
Deer Resistant: High
Mr. Smarty Plants says
Native plants for dry shade in Austin
March 27, 2007
I live in North Austin, and I'd like to find plants that would work in dry shade. This area does receive a couple of hours of morning sun, and I've had great luck with Hinckley's Columbine. Any o...
view the full question and answer
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Fredericksburg Nature Center - Fredericksburg, TX
Lady Bird Johnson Wildflower Center - Austin, TX
Pineywoods Native Plant Center - Nacogdoches, TX
Sibley Nature Center - Midland, TX
Brackenridge Field Laboratory - Austin, TX
Texas Master Naturalists - Lost Pines Chapter - Bastrop, TX
Herbarium Specimen(s)NPSOT 0364 Collected May 2, 1993 in Comal County by Mary Beth White
Wildflower Center Seed BankLBJWC-0104 Collected 2007-05-30 in Travis County by Lady Bird Johnson Wildflower Center
BibliographyBibref 765 - McMillen's Texas Gardening: Wildflowers (1998) Howard, D.
Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Bibref 328 - Wildflowers of Texas (2003) Ajilvsgi, Geyata.
Bibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.
Search More Titles in Bibliography
Web ReferenceWebref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Triodanis perfoliata in USDA Plants
FNA: Find Triodanis perfoliata in the Flora of North America (if available)
Google: Search Google for Triodanis perfoliata
MetadataRecord Modified: 2023-03-01
Research By: LAL